Feed mechanism for sewing-m ach in es



(N'o Model.)

M. J. PBRREEN. l FEED MEGHANISM POR SEWING MACHINES.

No. 270,185. I Patented Jan. 2, 1883.y

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dUNrrED STATES ,Pnrlilvr Ormea.

MYRGN J. FERREN, OF STONEHAM, MASSACHUSETTS.

`Feen MEol-lANlslvl FOR sEwlNVG-MACHlNEs.

SPECIFICATION forming part of Letters Patent N o. 270,185, dated January 2, v`1883. l.

Application flied April 21, lese. (No model.)

To all whom it may concern Be it known tllat I, MYRON J. FERREN, of Stoneham, ill the county otl Middlesex alld Slate of Massachusetts, have invented certain `Improvements in Feed Mechanism t'or Sewing- Machines, ot' wllich the following is a specitication.

This illvention relates to that class of sewillg-lnachillet'eed mechanism whereby the Work is reciprocated instead of being moved progressively, so that elongated stil ches are formed upon the work til-st from and then hack to a given point, the feed-dog being adapted to serve as a pivot for the work,enabling theoperator to rotate the latter and cause the stitches to radiate from a colnnlon center and form ornamental designs.

Herelol'ore in lnechauisln of this,class the feed-dog has hadonly one movement in each direction-that is to say, after the formation of each stitch the feed-movement has been reversed, so that the designs produced have been linlited ill depth to the length ot'a single stitch.

l'lle object of the presentinvention is to 'give the leed-dog rst a series of steps or nlovements ill one direction and thell aA corresponding series in the opposite direction, thereby i'orlning first a series of stitches laid end to end t'roln a given point, and then asimilar series extending back to said poillt, tllus enabling designs ot' a greater size or depth to be produced.

To this end nly invention consists in the ilnprovenlents which l will now'proL-eed to describe and clailn.

Of the accompanying drawings, folnling a part of this specification, Figure l represents a front elevation of a portion of a sewing-machine enlbodying lnyiulprovement. Fig.2 represents an end elevation of the same. Fig. 3 represents a section on lille m m, Fig. 2. Figs. 4, 5, alld 6 represent respectively sections on linesg/y,zz,and z'z, Fig. 1. Fig. 7 represents a View of a part detached. Figs. 8, 9, and l0 represent stitches formed by mechanism.

lhe same letters of reference indicate the saule parts ill all the figures.

In the drawings, A represents the needle,

`B the shuttle, and U the presser-foot, of a sewing-machine, said parts operating ill the usual manner,

lthe improved D represents the feed-dog, which is formed at its upper end so as t0 constitute a pivot on which the work may be rotated. The leed-dog is formed upon a hiturcated lever, D', which is connected by a pivot, E, to ears formed on a bent arnl,F, the latter being clamped against a stud, G, which projects downwardly 'from the bed otl the machine. The stud Gis slotted in its lower elld to receive'a horizontalstud or bolt, H, which has a shoulder, I, bearing against one side ot' the stlld Gr, and is threaded at its inner end to engagea. nut, J,Whi;eh bears against the arln Fand clam ps the latter against the stud Gr, and at the saule time secures the bolt H to said stud.

K' represents a sleeve adapted to slide longitudinally on the bolt H, and providedat its inner elld With a Bange, K', alld at its oppo-` site end with a collar, L,whicll is screwed llpon or otherwise rigidly attached to the sleeve K.

M represents a ratchet, which is rigidly at- 'cached to the sleeve K; and N represents a platejournaled upon said sleeve so as to rotate independently thereof, and provided with a spring-pawl, O, which engages withbthe ratchet, as shown in Fig. 5. rlhe plate N is connected by all arm, B, with a crank or eccentric on the driving-shaft S ofthe machine, said shaft and arln oscillating said plate upon the sleeve K, and causing ils pawl to rotate the ratchet M, collar L, and sleeve K step step.

T represents a collar journaled upon the y sleeve K, between the plate N and flange K.

Said collar has vertical dovetail grooves in its opposite sides, ill which are slides U U, adapted to move verticallyand provided with outwardlyprojecting pins or pivots V V, enterin g oritices -in the bifurcations ot' the lever D,a.s shown ill Fig. 4.' The collar L has a calll-groove, W, cut in its periphery, illto whicll projects a roller, a, on a screw-stud, which isinserted in a casing, b, the latter being secured to the bolt Hby means of one or nlore set-screws, c.

The operation is as follows: The collar L with its cam-groove and attached parts being rotated step `by step, as described, the engagement of the roller a with the cam-groove causes the collar L, sleeve K, and the parts supported thereby to receive tirst a series of longitudiroo nal steps or movementsvin one directioll and then a similar series in the opposite direction, the stud on which the roller a is placed beingtixed and the cam having a diagonal di- It will he seen that the described engagement I of the lever D with the collar T causes said lever, with the feed-dog, to move with the collar L, sleeve K, and accompanyingr parts, and thus move the work resting on the feed-dog first a series of steps in one direction and then a similar series ot' steps in the opposite direction.

The steps are so timed relatively to the operaby single stitches as heretofore.

tion of the stitch-forming mechanism that the Work willbe moved only when the needle is raised. The stitches 3 are therefore laid upon the Work in a series extending from a given point outwardly, and then 4in a similar series back to said point, as shown in Fig. 8. After each outward and returning series has been formed the operatorturns the Work on thet'eeddog, the latter acting as a pivot, so that the next seriesof stitches will diverge from the first, and so on. A circular design, as shown in Fig. 9, or a segmental or fan-shaped design, as shown in Fig. 10, may thus be formed, each design having a depth or distance from the inner to the outer point considerably exceeding that of any design which can be produced The designs are also more durable than those heretotore made, because the individual stitches are not so long and loose. Boot or shoe uppers and many other articles in leather, cloth, and other materials may be ornamented in this manner.

I prefer to employ a spring-brake, l1., bear-` ing upon the periphery of the collar L, to prevent the latter from being rotated farther than the length ot one of the ratchet-teeth at a time, said brake being a metal spring secured at one end to a fixed support and pressing with its free end a piece of leather or other' suitable material against the collar L.

l am aware that af'eed dogor device adapted to give the .Work the usual progressive movement has been provided with mechanism to move it laterallyl in a series of steps-from the needle, and then a similar series of steps toward the needle; but such device gives the work a compound movement and produces a is made vertically adjustable by means of a slot, F', as shown in Fig. 3. By raising or lowering said plate the length of each movement ofthe feed-dog will be increased or diminished, as will be readily seen.

The casing b is adjustable upon the bolt H, and is held by its set-screw c at any point to which it maybe adjusted. By moving said casing the starting-I )oint of the feed-dog may be brought nearer to or farther from the needle.

I claiml l 1. The combination, with the stitch-forming mechanism ot' a sewing-machine, ot' afeed-dog adapted tov serve as a pivot for the Work resting upon it, and mechanism, substantially as described, to impart to said feed-dog, first, a series of substantially horizontal steps in one direction, and then a similar series in the op posite direction, whereby a series ot` elongated stitches are laid upon the material from a given point, and another series back to said point, as set forth.

2. The combination, with the feed-dog and its pivoted supporting-lever D', of the horizontally-movable colla-r T, having verticallymovable slides U U,engaged with the lever-D', and means, substantially as described, for giving said block tirst a series of steps or movements in one direction and then a similar series in the opposite direction, thereby oscillating the lever 1.) and the feed-dog intermittently, as set forth.

3. The ncombination, with the feed-dog, supporting-lever, and the collar T, having slides U U, engaged with said lever, ofthe verticallyadjustable arm F, to which 'said lever is pivoted, and means for positively holding said arm in any position to which it maybe adjusted, asand for the purpose set forth.

4. The combination, with the feed-dog and its pivoted supporting-lever, ot` the, horizontally-movable collar T, engaged, as described, with the lever,.the collar L, having the camgroove W and adapted to rotate independently and to move horizontally with the collar T, and the casing I), having'a stud or roller engaging with the cam-groove, said sleeve being horizontally adjustable and provided with means for positively holding it in any position to which it may be adjusted, whereby the initial position or starting-point of the feed-dog may be regulated, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two Subscribing witnesses, this 15th day ot April, 1882.

MYRON J. FERREN.

Witnesses:

GEORGE A. THOMPSON, U. F. BROWN.

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